PHP OOP Test - 2 - Sanfoundry

1. Which keyword is used to refer to properties or methods within the class itself?

$this

private

public

protected

2. PHP recognizes constructors by the name _________

function __construct()

classname()

function _construct()

_construct()

3. Which one of the following keyword is used to inherit our subclass into a superclass?

include

implements

extends

inherit

4. Which of the following statements is/are true about Constructors in PHP?

i) PHP 4 introduced class constructors.
ii) Constructors can accept parameters.
iii) Constructors can call class methods or other functions.
iv) Class constructors can call on other constructors.

ii) and iii)

i), ii), iii) and iv)

ii), iii) and iv)

ii)

5. Which version of PHP introduced the instanceof keyword?

PHP 5

PHP 6

PHP 4

PHP 5.3

6. Which keyword allows class members (methods and properties) to be used without needing to instantiate a new instance of the class?

final

private

static

protected

7. In the following PHP code, what is/are the properties?

    <?php
    class Example 
    {
        public $name;
        function Sample()
        {
            echo "This is an example";
        }
    } 
    ?>

function sample()

public $name;

echo "This is an example";

class Example

8. Which one of the following functions is used to determine whether a class exists?

exist()

class_exist()

__exist()

exist_class()

9. Which method scope prevents a method from being overridden by a subclass?

Protected

Static

Final

Abstract

10. Which one of the following functions is used to determine object type?

type()

is_a()

obj_type()

is_obj()